Pipe or flue connection for hot-air furnaces.



E. C. CHAPPELLE. PIPE 0R FLUE CONNECTION FOR HOT AIR FURNACES.

APPLICATION FILED MAR. 61 1915- Patented Nov. 2, 1915.

E C. C'HQPPELLE APH CO.,WASHINGTON. n. C

EDWARD a. GHAPPELLE, 6F conlvrlve, New YORK.

rrrn on, BLUE oomvncrron FOR HOT-AIR FURNACES.

. Connections for Hot-Air Furnaces, of which the following is a specification, reference being had to the accompanying drawings.

This invention relates to an improved pipe or fine connection for hot air furnaces and has for its primary object to provide improved means for connecting a plurality of fines leading from the several compartments of a building to the bonnet of a furnaceat the center thereof, a It is a more particular object of the present invention to provide square or rectangular heat conducting flues whereby the same may be compactly fitted or nested in an upstanding collar or flange on the bonnet of the furnace so that the heat rising from the fuel bed will be equally distributed to the several flues.

The invention has for a further general object to improve the flue connection for hot air furnaces in the manner above referred V to, whereby a maximum amount of heat will be obtained from a minimum consumption of fuel, the invention, as a whole, be1ng simple in its construction, inexpensive to pro duce, and highly efiicient and serviceable in practical operation.

With the above and other objects in view, my invention consists in the novel features of construction, combination, and arrangement of parts to be hereinafter more fully described, claimed, and illustrated in the accompanying drawing, in which,

Figure 1 is an elevation of a furnace, partly in section, illustrating my improved pipe or flue connection; and Fig; 2is a section taken on the line 22 of Fig. 1.

In the illustrated embodiment of my invention, 5 designates the hot air furnace which may be of any ordinary type and is provided at its upper end with the tapering bonnet or hood 6 into which the heat is received and directed into the several flues. I provide this hood with the upstanding rectangular wall or fiange7.

8 designates the conducting flues or pipes which are of rectangular form in cross- 1 158 78fi Specification of Letters Patent. p Patented NOV 2 1915 Application filed' March 1915. Serial No. 12,611.

section, and as shown in Fig. 2, have one of their ends fitted within the upstanding wall The rectangular flues are of such di mensions that when all of the same have been fitted'into the collar or flange? on the hood 6, they will be very compactly or tightly nested therein, so that no air space will remain between the several flues 8 through which the hot air might escape into the furnace room. The other ends of the several flues 8 are, of course, extended to the wall registers of the several apartments in the usual manner. It is apparent that when a greater or less number of flues than is shown in the drawing are necessary, the form and proportion of the upstanding collar 7 will be changed accordingly.

In hot air furnaces, as generally constructed, the flues or pipes extend radially from the collecting chamber in the upper end of the furnace, and there is an unequal distribution of the hot air to these fines. The draft through the furnace causes a direct upward movement of the hot air from the center of the fuel bed, and it is, therefore, obvious that, by extending the flues directly into the top of the heat collecting chamber at its center, a maximum quantity of the hot air from the interior of the furnace will be distributed in approximately equal proportions to the several flues. In this manner, I obtain a maximum supply of hot air from a minimum consumption of fuel so that all of the various compartments in the building to which the fines are connected will be uniformly heated.

From the foregoing description, taken in connection with the accompanying drawing, the construction, manner of operation, and several advantages of my invention will be clearly and fully understood. The device is applicable to the several types of hot air furnaces now in common use without necessitating any material alterations in the, same. It will, however, be understood that the invention is susceptible of considerable modification in the form, proportion and arrangement of its several structural features and I, therefore, reserve the privilege of adopting all such legitimate modifications as may be fairly embodied within the tion, What I desire to claim and secure by being frictionally engaged with each other provided With a bonnet having anupstandsignature in the presence of two Witnesses.

' ing rectangular collar, of a plurality of air EDWARD ,GHAPPELLE.

conductiiififiu'es of rectum-1% frm i1'1 Witiiessw: v cross-section having one of their ends fitted DAVID Rosin, Within said collar, the siii'd'efid s 6f the fiues J bill? EL Diihffifi. 

